Husband drama ladies is long but I need your help

Ok I don't even know how to start this but it's been a while that when ever I ask my husband questions he replies to me screaming which I don't like and I tell him not to scream at me so he ends up being upset for me telling him and I end up mad to but I try to stay away so that I can relax this Saturday was his sisters birthday and I asked him for the car keys to go buy her something and he started screaming so I didn't end up going I just stayed home my mother in law lives right across my door so I was able to hear the whole party laughs and screams so it seemed like my husband was having lots of fun without me all I did was cry that night why I don't know why I just felt like I had to  do anyways sunday goes by and is  time to go to bed and idk how we started this conversation where he said he can always find someone else this was the second time him mentioning something like that and he also said if we were to separate I won't find another guy cause I'm have a big belly and none likes that so I got so mad and I answer back "really well you wron maybe someone would without worrying to get me pregnant again since I already am" and he got mad when he started all this he got his pillow and he turn to my feet and didn't talk to me after that I mean if he wants respect then give it  now this morning he woke up in such a bad mood and I'm just in bed like I'm blank I feel so sad and feel like crying but trying not to irk hoe I should be feeling and if I should even bother to tell him that he is hurting my feelings this is our rainbow baby and yet he doesn't even talk to my tummy or nothing is like I'm just there and he can care less I feel like I'm the only one that cares for this baby and feel so alone 😞😞